Year PPG and IMF only, % of exports of goods, services and primary income 1975 9.70883735611191 1976 7.31620951271992 1977 9.70934575417884 1978 14.1644244907415 1979 18.5898869818817 1981 18.0477995045777 1982 19.7596673821522 1983 19.5881781784448 1984 19.3408565354684 1985 21.9585148629093 1986 27.4066948098969 1987 24.6039681099512 1988 26.276184745852 1989 22.4181261056088 1990 20.0354438012568 1991 18.7973786068728 1992 17.4018873040267 1993 15.8190039242283 1994 13.0417423836854 1995 14.7241556949188 1996 15.1103832220227 1997 15.2781447403613 1998 14.1401400755438 1999 15.5175254850734 2000 13.8626297766208 2001 13.3503003481572 2002 13.2233699130912 2003 11.95284744671 2004 8.35242889471649 2005 8.38410298403871 2006 7.51565897618392 2007 4.39035518040903 2008 4.02321797075233 2009 4.09279412332071 2010 3.64866727758488 2011 3.03332556686719 2012 2.94414470102568 2013 3.26619031229095 2014 3.76529712156716 2015 4.71057014574287 2016 4.67985925812168 2017 4.30171757821188 2018 4.74093828197505